113 so far

src/main/java/rocks/zipcode/quiz5/objectorientation/account/Account.java

 /**
  * @author leon on 30/12/2018.
  */
-public class Account extends BankAccount implements Transactable {
-    public Long getId() {
-        return null;
-    }
+public class Account {
+    Long id;
 
-    public void setId(Long id) {
+    public Account() {
     }
 
-    @Override
-    public void deposit(Double amountToIncreaseBy) {
-
+    public Account(Long id) {
+        this.id = id;
     }
 
-    @Override
-    public void withdrawal(Double amountToDecreaseBy) {
-
+    public Long getId() {
+        return id;
     }
 
-    @Override
-    public Double getBalance() {
-        return null;
+    public void setId(Long id) {
+        this.id=id;
     }
+
+
 }

src/main/java/rocks/zipcode/quiz5/objectorientation/account/BankAccount.java

 /**
  * @author leon on 27/12/2018.
  */
-public class BankAccount {
+public class BankAccount extends Account implements Transactable {
+    private Double val;
+
+    public BankAccount() {
+    }
+
+    public BankAccount(Long id, Double val) {
+        super(id);
+        this.val = val;
+    }
+
     public void setBalance(Double val) {
+        this.val =val;
+    }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+        if (amountToIncreaseBy < 0){
+            throw new IllegalArgumentException("not happening");
+        }
+        val = val + amountToIncreaseBy;
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+        if (amountToDecreaseBy > 0.0 && amountToDecreaseBy > val){
+                throw new IllegalArgumentException("can't happen");
+            }
+                val = val - amountToDecreaseBy;
+    }
+
+    @Override
+    public Double getBalance() {
+        return val;
     }
 }

src/main/java/rocks/zipcode/quiz5/objectorientation/account/Employee.java

 /**
  * @author leon on 30/12/2018.
  */
-public class Employee {
+public class Employee implements Transactable,Worker{
+    private BankAccount bankAccount;
+    private Double hoursWorked;
+
     public Employee() {
     }
 
+    public Employee(Double hoursWorked) {
+        this.hoursWorked = hoursWorked;
+    }
+
     public Employee(BankAccount bankAccount) {
+        this.bankAccount = bankAccount;
     }
 
     public BankAccount getBankAccount() {
-        return null;
+        return bankAccount;
     }
 
     public void setBankAccount(BankAccount bankAccount) {
+        this.bankAccount=bankAccount;
+    }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+        bankAccount.deposit(amountToIncreaseBy);
+
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+        bankAccount.withdrawal(amountToDecreaseBy);
+    }
+
+    @Override
+    public Double getBalance() {
+        return bankAccount.getBalance();
+    }
+
+    @Override
+    public void increaseHoursWorked(Double numberOfHours) {
+        hoursWorked = hoursWorked + numberOfHours;
+    }
+
+    @Override
+    public Double getHoursWorked() {
+        return hoursWorked;
+    }
+
+    @Override
+    public Double getHourlyWage() {
+        Double wage = getMoneyEarned()/getHoursWorked();
+        return wage;
+    }
 
+    @Override
+    public Double getMoneyEarned() {
+      return   bankAccount.getBalance();
     }
 }